Dust-spraying machine.



H. D. BABGOGK, F. C. WELLS L J'. W. BROWN.

DUST SPRAYING MACHINE.

APPLICATION FILED JAN.12, 1912.

LWR@ 15, Dat-@md Aug. 11, 1914.

TTORNEYS UNITED STATES PATENT OFFICE.

HENRY D. BABCOCK, OF LEONARDSVILLE, FRANK C. WELL-S, 0F HOLLAND PATENT,

AND JAY W. BROWN, 0F IRIVER FORKS, NEW YORK, ASSIGNOBS T0 CHILDS &COMPANY, OF UTICA, NEW YORK, A CORPORATION.

CHARLES H.

i DUST-SPRAY'ING MACHINE. y

To all whom it may concern.'

Be itknown that We,-HENRY D. BABCooK, of Leonardsville, Madison county,FRANK C. WELLS, of Holland Patent, Oneida county, and JAY W. BROWN, oRiver Forks, in the county of Madison, and all in the State of Yew York,have invent-ed certain new and useful Improvements in Dust- SprayingMachines; and we do hereby de- Clare that. the following is a full,clear, and exact-description thereof, whiohwill enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to the reference-numerals markedthereon, which form part of this speciiication.

The object of our present invention is to provide an improved dustspraying machine .of simple construction and effective operation.

Our invention relates to thatclass of dust spraying machines wherein thepowder or dust to be scattered is carried in a receptacle and fedtherefrom into a pipe through which is forced a strong current of airwhich carries the dust along and scatters it in the desired direction.As these machines are used for dusting plants, trees or vines they areusually portable and are commonly made tobe operativewhile being movedpast the plants to be dusted With all substances used in this powderedform, means must be provided in the `receptacle .for stirring up or'agitating-the powder. This is necessary because the movement of themachine over the ground and the vibration from the fan or 'othermachinery used to produce the air current, tend to` make the powdersettle together into a heavy close formation not adapted to beingreadily fed through'a small opening` and being then quickly separatedinto its fine particles by the current of air andy held insuspensionthereby. Furthermore the agitation must be'of a character orsupplemented by means adapted to effect a regular or steady supply ofthe powder. Several of the substances used such as powdered sulfur arefound to be particularlydifiic'ult to keep in a. loose or free state andthe machines heretoforeused to dust with ysulfur-or similar powders havebeen very unsatisfactoryv in that they failed to keep' the powderproperly stirredupand y' ailedtoel'ect a steadyv supplylof .powder-in4lSpeeiiication of Letters Patent. Application led January 12, 1912.Serial No. 670,855.

[a suiiciently loose state. To overcome thesev l difficulties is theobject of our invention and we effect these improvements by certain"fea-v tures of construction oi the agitating and feeding means, and bycertain combinations :thereof with the receptacle and its outlet whichwill be now particularly described.

y Figure 1 is a perpendicular sectional View of the receptacle andcontained or adjacent .parts of a dust spraying machine embodying ourinvention. Fig. 2 is afhorizental sec tional view on line 2-2 of Fig.l'. Figs. 3 and 4 arev sectional views on lines 33 and ill---Llrespectively of Fig. 1. Fig. 5 isa perlines 5-45 of Fig. 1.

ticular description therev is illustrated the powder receptacle 8consisting of an upper upony the frame work of the dusting machine so'as to have its outlet 11 directly over and of' air.. Interposed betweenthe outlet 11' and the opening 12 into the air pipe 13 is a as by meansof lever 1G so as to partly or Patented Aug. 11, 1911.4.

pendicular sectional view on either of the 4 y y 70 Referring to the.drawing 1n a more par- The receptacle 8 is 'suitably lsupported close-toa circular opening 12in the air pipe'V 13 through-which is forced by anyapproprlatemeans (not shown) a strong currentV sliding gate 14 having anVopening 15 therel in which may be brought to registerentirely' with thesaid outlet and hole and so give the' full extent of feed or the gatemay be moved;l

entirely close the outlet from the powder receptacle.

removable cover 17 from the center of which tively 'wide flatperpendicular blade 19.

the bottom of the receptacle and the width therein.l

JPart way up in the conical portion of the receptacle there are mountedupon a hub 27 fixed to shaft 18 two oppositely`ex- Over the top of thereceptacle is placed a extends downwardly a revoluble shaft 1,8' havingfixed to its lower end a thin and rela-` The blade 19 extends into theoutlet 11 in' ofthe blade at that point is substantially l' the diameterof said outlet 11 or as near thereto as is practical for free rotatioirtending flat arms '20 extending in a substanshaft 1 8 and the attachedparts will always move in one direction. .The ,direction of suchmovement is indicated in the `drawing by arrows, and the angle of theldifferent arts shownin the drawings is such as will e proper assumingthe rotation is in the direction indicated.

From theouter ends of pressingarms 20 eX- vtend stirring arms 21 whichfollow theline of tapering wall 1,0 to its junction with cylindricalIwall 9 and` also follow' said wall 9 upwardly for a art of its heightand fit thereagainst as closely vas may be without making too reatfriction when rotated. As will be clear arms 2l are bent at areverseangle `to, that of thearms 20 from which they extend, so that theforward ed es-of arms 21 are closer to theadjaeent wal s of thereceptacle vthan the rear ed e o'f the arms. Itwill be obvious thereforet at upon rotation of these arms they will cut the powder away from thewalls of the receptacle and that the upper or pendicular portion ofthese .arms will tend' to throw the powder toward the center of thereceptacleV while the lower or oblique portion of the arms 21 will ytendto throw the powder obliquely upward and toward the center of thereceptacle. These stirring arms 21 will thus periodicallycut the powderawa-y from the tapering wall 10 4and from the lower partof. theperpendicular wall 9 and so prevent thepowder from sticking to or cakingup thereupon,` and will also loosen the wholebody of powder by throwingit in the two directions mentioned and letting it fallback again inlarge measure `to its original position. On account of the inclinationof the stirring arms the powder will not be pressed together in .frontofthe arms but will slide olf. to the inner sideand for thesame reasonthe powder will have no ytendency to stick to the inclined face of thearms but will be cleared therefrom by the .motion of the arms. Thusthese stirring armswill form agitators effectively keeping the mass ofpowder in a free or loose state and gently urging it toward the Centerof the receptacle into a line over the outlet l1 or close enoughtheretoasto. fall that way'down the taper-A ing .wall 10.r v As will beseenfrom the arrangement of y seen in Figs. 2, 3 and 4, thesetinueduntil arts as described and particularly from Pig. 2 the pressing arms20 are located directly below the conter of the mass of powder that iskeit loosened by the agitating arms 21 and the rotation o these arms 20periodically, cut in between the powder above those arms and its supporton that portion of the tapering walls 9 that is below said arms 20, thusfurther agitating the powder. But the main purpose of these arms 20 isto force the powder therehclow downwardly between the tapering walls 10toward the outlet l1 by cutting into the lower part of the loosened massof powder thereabove and forcing it downward by rcason of the angle ofthese arms 20 as already7 described.

To prevent this forced downward feed from the arms 20 pressing thepowder there; below into a too solid state is one of the purposes of thewide blade 19. As the powder is forced downwardly in an obliquedirection from the arms inclination of the tapering wall lO and towardthe outlet 11, the inner edge of this obliquely moving mass is engagedby the outer edges of the blade 19 and so again cut orugitated in adirect line above the outlet 1l and so loosened and prepared for a freefall through said outlet. It willalso be observed t'hat this blade 19extends downwardly substantially to the sliding gate 14, so that thislast agitating process is conthe moment the powder is to drop throughthe opening l5 in said gate and thence into the air pipe 13, thusinsuring the powder being dropped into the air current in a loosenedstate so that it may be thoroughly and easily mixed with the air and soform an efficient, safe and economical dusting mixture. This stright,fiat, perpendicular, agitating blade 19 is found to be peculiarlyefficient for the last agitatingprocess and has advantages over otherforms of agitator-s heretofore used in that its width is suiiicient to agitate the entire mass of powder directly above the outlet, while itsflat surface does not press or wedge the owder together by its movementand o crs no lodgment for powder but is easily cleared of powder by thedownward movement of the powder itself. All these features also ussistthe blade 19 in its other purpose of forming an elicient means ofdistributing the powder over the outlet 1l and sov getting a regular andsteady flow of owder into the air pipe 13 no matter to w lat cxtent thegate 14 is moved as long as it is in any open position.

The upper part of shaft 18 is journaled in a suitable bearing 22 in thecenter of the cover 17 and has its end extended therethrough andequipped with means for rotating said shaft and its attached parts. Suchmeans may be a gear wheel 23 secured 20 by reason of the to' said upperend of the shaft and having teeth 24 to be engaged by a inion 25 whichin turn is mounted on a sha with a driven sprocket wheel 26extendingover the farther edge of the cover 174 as viewed in Fig. 1.

What we claim as new and desire to secure by Letters Patent is:

1. The combination in a dust spraying machine of a powder receptacle, anair pipe below said receptacle, an outlet connecting 'said receptacleand the air pipe, a perpendicular shaft centrally located and revolublymounted in said receptacle, arms projecting horizontally from said shaftto the walls of the receptacle andextending upwardly along the contourthereof, the horizontal portions of said arms being downwardly inclinedtoward their rear edges and adapted to yieldingly feed the powderdownwardly toward the opening and the upwardly extending portions ofsaid arms having their forward surface rearwardly inclined as they leavethe side walls and adapted to urge the powder toward the center of thereceptacle and means for rotating said shaft.

2. The combination in a'dust spraying machine of a powder receptacle, aremov able cover for said receptacle, an air pipe below said receptacle,an outlet connecting said receptacle and air pipe, a perpendicular shaftjournaled only in said cover and extending downwardly in saidreceptacle, arms projecting horizontally from said shaft to the walls ofthe receptacle and extending upwardly along the contour thereof, thehorizontal portion of said arms being downwardly inclined toward theirrear edges and adapted to yieldingly feed the powder downwardly towardthe opening and the upwardly extending portions' of said arms havingtheir inner edges inclined toward the center of the receptacle and meansfor rotating said shaft.

In witness whereof we have aflixed our signatures, in the presence oftwo witnesses, this 28th day of Dec. 1911.

HENRY D. BABCOCK. FRANK C. WELLS. J AY W. BROWN. Witnesses to signaturesof Henry D. Babcock and J ay W. Brown:

FLOYD M. Cnoor, I. A. BABooCK. Witnesses to signature of Frank C. Wells:

HARRIET "WILLIAMS, ETHEL BUi'rERWoRTH.

vrearwardly and adapted to urge the powder

